* {
    margin: 0;
    padding: 0;
    list-style: 0;
}

body {
    margin: 0;
}

a {
    text-decoration: none;
}

ul {
    list-style-type: none;
}

nav {
    width: 100%;
    height: 65px;
box-shadow: 0 1px 5px rgba(0, 0, 0, 0.1);
top: 0;
    position: fixed;
background-color: white;
}

.nav-left span {
    line-height: 65px;

}
nav span {
    font-size: 14px;
    margin-left: 10px;
    color: black;
}

.all {
  
    width: 1100px;
    overflow: hidden;
    margin: 20px auto;
    margin-top: 65px;
}

.left,
.right {
    float: left;
}

.left {
    width: 720px;
  

}

.right {
    width: 350px;
    margin-left: 30px;



}

.bullet span {
    margin-left: 10px;
    line-height: 45px;
    font-size: 14px;
}

.sanlian span:nth-child(2),
.sanlian span:nth-child(3),
.sanlian span:nth-child(4) {
    margin-left: 20px;
    line-height: 70px;
}

.biaoti input[type=button] {
    color: #666666;
    padding: 5px;
    border-radius: 20px;
    border: none;
}
